I. Ahmad, S. Basra, M. Akram, A. Wasaya, S. Hussain, and A. Iqbal, “Alleviation of oxidative stresses by potassium fertilizer in spring maize under early and late sown conditions”, Bangladesh J. Sci. Ind. Res., vol. 51, no. 2, pp. 101–110, Jun. 2016.